"monkey steals the peach" (martial arts), distracting an opponent with one hand and seizing his testicles with the other
(coll.) grabbing sb by the balls
Definitions (粵典–words.hk)
語句
借指用手偷襲人哋下體,尤指摙男人陰囊 analogy of sneak attacking of another's genital organ by palm, especially to grip a man's scrotum; literally, monkey steals peach
佢慣咗打西拳,規例係唔准打下體,所以佢擋唔到嗰下猴子偷桃。
佢惯咗打西拳,规例系唔准打下体,所以佢挡唔到𠮶下猴子偷桃。
keoi5 gwaan3 zo2 daa2 sai1 kyun2, kwai1 lai6 hai6 mm4 zeon2 daa2 haa6 tai2, so2 ji5 keoi5 dong2 mm4 dou2 go2 haa5 hau4 zi2 tau1 tou4 He is used to play western style boxing, the rules said no attack on genital organ, that's why he couldn't handle that sneak attack on his scrotum.